Knife sheath



FIG. 1 is a front elevational view of a knife sheath;

FIG. 2 is a left-side elevational view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right-side elevational view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a knife sheath, as shown and described. 